He had been left with just £40 a week to live on, Oxfordshire Coroner’s Court heard on Wednesday.

His sister Cathie Wood said yesterday the family were in touch with Barton’s Oxfordshire Welfare Rights (OWR).

She said: “It could be that we go down the line of taking this through a tribunal.”

Tom Pollard, of Oxfordshire Mind, said: “Unfortunately this tragic case is not an isolated incident. We hear too often how changes to benefits are negatively impacting vulnerable individuals, who struggle to navigate a complex, and increasingly punitive, system.”

Atos Healthcare spokeswoman Tessa David said: “Nobody has contacted us about the case.”